Fabrication of Network Spherical α-Al2O3 and Its Application on the Separator of Lithium-Ion Batteries

被引：0

作者：

Chen, Haiyang ^{[1
,2
]}

Zhang, Huifang ^{[1
,2
]}

Huang, Hongliang ^{[1
,3
]}

Guo, Mingjie ^{[1
]}

Wang, Jiale ^{[1
]}

Wang, Peng ^{[1
]}

Li, Bin ^{[4
]}

Chen, Junhong ^{[4
]}

机构：

[1] Hebei Univ Architecture, Sch Civil Engn, Zhangjiakou 075000, Peoples R China

[2] Hebei Key Lab Diag Reconstruct & Antidisaster Civi, Zhangjiakou 075000, Peoples R China

[3] Hebei Prov Lab Inorgan Nonmet Mat, Tangshan 063000, Peoples R China

[4] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

MATERIALS | 2025年 / 18卷 / 03期

关键词：

ceramic-coated separator; network spherical alpha-Al2O3; thermal stability; ionic conductivity; HIGH-PERFORMANCE;

D O I：

10.3390/ma18030660

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ceramic-coated polyolefin separator technology is considered a simple and effective method for the improvement of lithium-ion battery (LIB) safety. However, the characteristics of ceramic powder can adversely affect the surface structure and ion conductivity of the separators. Therefore, it is crucial to develop a ceramic powder that not only improves the thermal stability of the separators but also enhances ion conductivity. Herein, network spherical alpha-Al2O3 (N-Al2O3) with a multi-dimensional network pore structure was constructed. Furthermore, N-Al2O3 was applied as a coating to one side of polyethylene (PE) separators, resulting in N-Al2O3-PE separators that exhibit superior thermal stability and enhanced wettability with liquid electrolytes. Notably, the N-Al2O3-PE separators demonstrated exceptional ionic conductivity (0.632 mS cm(-1)), attributed to the internal multi-dimensional network pore structures of N-Al2O3, which facilitated an interconnected and efficient "highway" for the transport of Li+ ions. As a consequence, LiCoO2/Li half batteries equipped with these N-Al2O3-PE separators showcased remarkable rate and cycling performance. Particularly at high current densities, their discharge capacity and capacity retention rate significantly outperformed those of conventional PE separators.

引用

页数：14

共 30 条

[1] Ryou M.H., Lee Y.M., Park J.K., Choi J.W., Mussel-inspired polydopamine-treated polyethylene separators for high-power Li-ion batteries, Adv. Mater, 23, pp. 3066-3070, (2011)
[2] Sun X., Wang C., Zhang X., Zhai X., Feng J., Li H., Nanodiamond-modified separators and optimized graphene anodes for highly enhanced performance of lithium-ion batteries, J. Alloy Compd, 929, (2022)
[3] Pei H., Chen J., Liu H., Zhang L., Hui H., Li Z., Li J., Li X., Ionic conductivity enhanced by crown ether bridges for lithium-ion battery separators, Appl. Surf. Sci, 608, (2023)
[4] Zhang Z., Fang W., Ma R., Brief Review of Batteries for XEV Applications, eTransportation, 2, (2019)
[5] Dai J., Shi C., Li C., Shen X., Peng L., Wu D., Sun D., Zhang P., Zhao J., A rational design of separator with substantially enhanced thermal features for lithium-ion batteries by the polydopamine–ceramic composite modification of polyolefin membranes, Energ. Environ. Sci, 9, pp. 3252-3261, (2016)
[6] Kim T.-H., Park J.-S., Chang S.K., Choi S., Ryu J.H., Song H.-K., The Current Move of Lithium Ion Batteries Towards the Next Phase, Adv. Energy Mater, 2, pp. 860-872, (2012)
[7] Tarascon J.M., Armand M., Issues and challenges facing rechargeable lithium batteries, Nature, 414, pp. 359-367, (2001)
[8] Ryou M.-H., Lee D.J., Lee J.-N., Lee Y.M., Park J.-K., Choi J.W., Excellent Cycle Life of Lithium-Metal Anodes in Lithium-Ion Batteries with Mussel-Inspired Polydopamine-Coated Separators, Adv. Energy Mater, 2, pp. 645-650, (2012)
[9] Li M., Wang K., Shen F., Bai Y., Yang C., Liu J., Yan J., Chen Y., Han X., An electrolyte-locked thermally stable composite separator for safe lithium ion batteries, J. Alloy Compd, 938, (2023)
[10] Wang Y., Guo M., Fu H., Wu Z., Zhang Y., Chao G., Chen S., Zhang L., Liu T., Thermotolerant separator of cross-linked polyimide fibers with narrowed pore size for lithium-ion batteries, J. Membrane Sci, 662, (2022)

← 1 2 3 →